Which statement best describes how an existing theory is often affected by the development of new technology?

an existing theory is thrown out and replaced with a completely new theory based on the new observations.
an existing theory is modified so that it can explain both the old and new observations.
an existing theory remains the same because a theory is a proven fact that is always true.
an existing theory is kept unchanged while a new theory is developed to explain the new observations.

Is it enough to be "suspected" of terrorism, or should these suspects have the right to a fair trial before being detained indefinitely? your response should be at least five sentences. use complete sentences and offer evidence to back up your opinion

There are 25 elements found in living things. how many of these elements are found in some organisms but not all? 1 , 6 , 19 , 25

Aresearcher conducts a focus group to learn about attitudes towards hygiene and disease prevention. two weeks after the focus group, the researcher learns one of the subjects had a heart attack at home and was hospitalized, but made a full recovery. based on dhs regulations, the researcher report this event to the irb? no, this does not need to be reported since the subject had the heart attack when they were home, not at the focus group.no, this does not need to be reported since it is unrelated to participation in the study.no, this does not need to be reported because two weeks have passed.no, this does not need to be reported since the subject recovered.